Hello.
I am trying to model a transient to analyse a gravity system. The first analysis I wanna do is when I close a butterfly valve which is initially 100% open with a flow of 989,00 L/s.
I modeled the butterfly valve as a FCV of valve type user…
Original Post: Accessing the efficiency and accuracy of WaterGEMS in Darwin calibrator for leakage detection
Hello Sushma Choure,
I need Bentley Hammer to carry out Transient Analysis, how can I download it?
Thanks.
Best regards,
Millicent…
Hi
I'm looking for any guidance / experience in calculating wavespeed and considering transient performance in a section of asbestos cement pipe pipe which will be re-lined using a flexible liner system. The liner product is semi-structural and inserted…
Hello,
How does Hammer treat an active PDD alternative in a transient simulation? Is PDD only for WaterGEMS EPS or is it also applicable to Hammer for transient analyses?
Regards,
Youssef
Hello,
I have a working 36hr EPS hydraulic scenario and would like to setup a transient scenario for a pump trip. My attempt in doing so has not been successful and I was seeing my zone draining and my pump station (that feeds the zone) dead heading…
Product(s):
HAMMER
Version(s):
V8i, CONNECT Edition
Area:
Modeling
Original Authors:
Tom Walski and Jesse Dringoli, Bentley Systems
This article is intended as a starting point for those who are seeking to perform a…
Product(s):
HAMMER
Version(s):
V8i, CONNECT Edition
Area:
Layout and Data Input
Problem
What is the meaning of the following message?
"The [Reverse Spin Allowed? = False] only works for [Shut Down After Time Delay] pump…
Product(s):
HAMMER
Version(s):
10.XX.XX.XX, 08.11.02.31 and greater
Area:
Calculation
Problem
How can you change the Accuracy and Maximum Trials for the transient calculation engine?
Transient results appear to be unstable…
Product(s):
HAMMER
Version(s):
08.11.XX.XX, 10.XX.XX.XX
Area:
Modeling
Problem
When computing a transient simulation with a one way surge tank (has check valve = true), the hydraulic grade is sometimes higher than…
Product(s):
HAMMER
Version(s):
08.11.XX.XX, 10.XX.XX.XX
Area:
Modeling
Problem
How can you view the minimum and maximum transient pressure or hydraulic grade results in a HAMMER model?
Solution
The maximum and minimum…
Product(s):
HAMMER
Version(s):
CONNECT Edition, V8i
Area:
Modeling
Problem
The results of a transient run are not matching the steady state results of a valve set to a given setting.
Background
As a test to assure that…
Applies To
Product(s):
SewerGEMS, SewerCAD, CivilStorm
Version(s):
CONNECT Edition, V8i
Area:
Modeling
Original Author:
Jesse Dringoli, Bentley Technical Support Group
Problem
Can the storm-sewer products…
Have you ever wanted to perform a transient analysis on a water network that you've designed? Did you know that you can configure the transient analysis while you design the steady state/EPS water model in WaterCAD or WaterGEMS, then directly open the…
Part of the Hydraulics and Hydrology Video Series ( more info )
Are you a Civil or Hydraulic Engineer using Bentley HAMMER? Did you know that animating transient profiles can greatly help you understand what is going on during your transient simulation…
Computer Applications in Hydraulic Engineering, 8th Edition
Dr. Tom Walski (Author), Tom Barnard (Author), Rocky Durrans (Author), Mike Meadows (Author), Steve Lowry (Author), Brian Whitman (Author) ISBN: 9781934493168
Bentley Institute Press’s…
Hello subscribers,
We will be offering a Live training course on Transient Analysis and Design with Bentley HAMMER on November 26-29, 2012. This 16 hour course is being taught in 4 hour increments over the 4 days, from 11:00 a.m. to 3:00 p.m. EDT each…
Hello Ahmed,
I would suggest trying both situations (one valve or two), then compare the results by closely examining graphs and profiles in the Transient Results Viewer (animating a profile path is a great start). This should show you if this arrangement…
This example model illustrates different ways to model valve closure with a TCV. Advanced TCV closure modeling is not included.
Note: This model can be opened in HAMMER version 08.11.00.30 and above.
Applies To
Product(s):
Bentley HAMMER
Version(s):
V8i, CONNECT Edition
Area:
Modeling
Original Author:
Jesse Dringoli, Bentley Technical Support Group
Overview
This technote explains how the…
Applies To
Product(s):
HAMMER, WaterGEMS, WaterCAD
Version(s):
V8i, CONNECT Edition
Area:
Modeling
Original Author:
Jesse Dringoli, Bentley Technical Support Group
Overview
This technote explains…
Product(s):
HAMMER
Version(s):
CONNECT Edition, V8i
Area:
Modeling
Original Author:
Jesse Dringoli, Bentley Technical Support Group
Overview
This TechNote explains how the surge valve element works and its typical application…
This is a list of articles containing general FAQs for Bentley WaterGEMS and WaterCAD products.
To search within this page, press [Ctrl]+F.
Calculations
Estimating pump specific speed
Transient Force Calculations
Input & Modeling
What…
Product(s):
HAMMER
Version(s):
CONNECT Edition, V8i
Area:
Modeling
Overview
This TechNote explains how the Hydropneumatic Tank element works and its typical application in HAMMER.
For information on modeling h ydropneumatic…
Applies To
Product(s):
Bentley HAMMER
Version(s):
V8 XM
Original Author:
Jesse Dringoli, Bentley Technical Support Group
Can I open WaterGEMS/CAD V8 XM models?
Yes. HAMMER V8 XM uses the same file…